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JOHN M. 3o." KnA'rliNG, or NEW YORK, N. Y., AssiGNon To E. K EATING,

v or SAME PLACE.

Letters Patent No, 62,274, :lf/ted February 19, 1867.

ENVELOPE, MACHINE.

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'lO ALL WHOM I'l MAY CONCERN: p

Bc it known that l, JOHN M. D. KEa'iING, of the city, county,-and State of New York, have invented certain new and useful improvements in Machines for Making Envelopes; undI do hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accompanying drawings, figures, and letters of reference thereon, making part of this specification. Of the said drawings- Figure l is a perspective view.

Figure 2 is a rear elevation.

' Figure 3 is a transverse section taken through the4 line S, el, Q.

Figure el, shows the crea-sing rollersvand supporting frame detached from the machine. Figure 5 is a horizontal section of iig. 4, taken through line l, 2. Figure 6 is a side elevation of the counting mechanism.

Figure 7 is a front view'of the counting mechanism.

Figures 8 and 9 are vertical and horizontal `projections of the additional ilap detached from `the machine.

Similar letters of reference indicate like parts in all the drawings.

My invention is designed as an improvement upon. the envelope machine, for which Letters Patent were granted to me on the 30th day of June, 1863, and consists, lirst, in the employment of adjustahlcrelastic creasing rollers, in combination with a foldingapparatus; second, a slotted feeding-plate iu combination with a folding apparatus; third, an auxiliary presser-Hap in combination with a folding apparatus; fourth, a counting inechanism, whereby the packing of envelopes is greatly facilitated, all of which will be full)T set forth hereafter.

To enable others skilled in the art to make and use my invent-ion, l will describe the construction and operation thereof) A representsthe hase of the machine; B B the frame or uprights thereof. C is a platform, secured to thc uprights B B, on which the feeding apparatus operates, and to the under side of which the creasing rollers are attached. D-is nsccond platform, immediately below C, secured to the main frame, upon which the foldingflaps are mounted. E is another platform for supporting the counting nlcehanisin, one end of which is secured to a girth joining the uprights B B immediately below the platform D, while the other end is supported in front of-thc main fratrie by uprights attached to the hase A, as plainly shown in tig` 1. F is an arch, bolted `to the top f the mainframe B B, supporting the 'slides and bea-rings for the plunger-rod R. G isa hand-lever for working the plunger. Il is the main` shaft. On this shaft, in machines made by ine, would be placed the cams to work the plunger flaps and feeder by inans of levers and proper connections t but as these form no part of my invention a detailed description is omitted. A full description may ,be found in the specification of the patent granted me June S0, 1863. On this inain shaft is placed a cani, Q, which, by means of a roller, q", and cam-lever and connecting-rod o', operates the auxiliary presser-flap. There is also upon the main shaft an eccentric, 1n', which, by means of a strap and rod, ze, operates the counting mechanism. To the rod Ris secured the plunger S, ofthe .same size as the envelopes to be made. To the under side of the platform C is secured by screws al frame, K', to which are secured the journal pins m m, by screws, p', for thcclastic creasing rollers l', as plainly shown in fig. -l. The feeder-plate O is secured to thc hars N, which slide freely in the grooves in the platform M, attached to the front end of the platform C. This feeder-plate is provided with a slot in its rear end, which is closed by the wedge r when in proper position beneath the plunger, thereby allowing the feeder-plato to reciprocate immediately after the plunger has descended clear of thc plate, and admitting of an easy cam movement, which could not be accomplished it' the plunger had to rise Aclear of the plate before it could he drawn hack.

Opcrz'ltz'on. i The operation will he as follows: The .paper blanks, 'which have been previously cut by d ies, are placed upon the reciprocating feeder-platc O, and carried forward under the plunger by means of'suiall hooks or projections; the plunger then descends and doubles tho sides and ends of the blank at right angle-ahy comingin contact with the creasing rollers, and leaves the blank upon a hinged flat bed. The elastic Arollermay heso set by means ot' the slotted journahpieccs that the plunger' may iinpinge with greater or less force for creasing or forming'the outline-of theenvelopc. Thejournals of the rollers working in the slots o` o allow the roller to be lifted up with the plunger as itvrecedes, and move away laterally from it, as shown in fig. 5. The feedplate having been drawn back, immediatelyafte'r the descent of the plunger S, and received, another blank, isA -ready tofeed it' forward as the plunger rises above the level of the plate. The laps non' operate to fold and complete the envelope; the folder s operating irstpto fold the end flaps then the gum flap, and lastly the pocket or .front daps. The folder y', which presses down on the gum flap, iscut, away to allow the auxiliary presserliap to press down on the part gummed, by whiehmeans i-t is relieved from the great. stra-in on the hinge which would be produced if the roller was extended to the edge. ofthe flap to press the gumrned vedges together. The auxiliary presser-flap cr folders', is int-ended to be so operated thatit starts immediately after the folder y', presses firmly on the. gummed portions of' the envelope, and rises alittle iu advance of the folder. To-this ap, s', are secured nipper pieces, which grasp the elastic pressers PP. These being formed of elastic material,V

readily yield to any inequality of surface, and press equally on all part-s ofthe envelope with which they are in contact. The counting apparatus operates as follows: The main shaft at each revolution communicates a forwardland-back movement to the segment-plate c, by means of the arms k v, and connecting-'rods u w'. To this plate is attached a spring-pawl, g, which engages in a ratchet-wheel, and causes it to revolve one tooth at each revolution of the main shaft.; the ratchet-wheel being held from. any retrograde movement by the springpaivl L, as plainly shown in fig. 6. The ratchet-wheel b is provided with twenty-tive teeth, this being the usual number of envelopes in a pack. To the back of this wheel isl secured a constantly increasing cani, g', which, coming in Contact with av pin, o, raisesl the slotted bar f attached thereto.` The upper part of this bar being formed into a rack, gears into a small pinioind, which is loose on theshaft a of thc pocket-wheel L, Apawl, r, held in place by a spring` is fixed on the back of pinion d, and engages n. small four-toothed wheel, s, fast upon the pocket-wheel shaft. The catch z', which is held against the pocket-Wheel L, by the spring n, catches into the notches auf, on the periphery of the wheel, and holds it in position. On the back of the ratchet-wheel b there is a pin, t, which at the proper time trips the lover g, and throws the catch t' with which it is in contact out of the notch in the pocket-wheel. All connections then being broken, the wheel L rotates by'means of the coil spring-f acting on the small ratchet-Wheel s, through the agency oi' the rack fand pinion d, till it rotates a quart-er, when it is arrested by thc catch t' dropping into the notch 2:. The envelopes-falling one at a time in front of the fingers l l, working through the slots in the plate c, are forced one beneath the other between the plates e e. The plate e, held in place by the projections Working in the slots of the heads L, is raised asA the pack of envelopes increases, and by its gravity keeps its packs together till it arrives at the place for the operator to put the hand on. These plates may be made of any desired weight.v

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is,-

l. The'elastic creasing rollers Z'l), in combination with the plunger S, for folding the ypaper blank at right angles, substantially as described and for the purposes spcciiied. v

A 2. The slotted feeding-plate O, in combination with the plunger, substantially. as described, and for the purpose specied.

3. The elastic ilu-p or presser S', in combination with the'folding mechanism,substantially as described and for the purposes specified. y

4. The counting mechanism in combination with the folding apparatus, constructed and operating substantially as described and specified. p

JOHN M.` D. KEATING.

Witnesses:

C. A. DURGIN, EDWARD E. OsnonN. 

